Warp-beam-holding- mechanism for looms



S. H. CARLING.

WARP BEAM HOLDING MECHANISM FOR LOOMS.

APPLICATION FILED JUNE l7. l9l8 Patented Oct. 14, 1919.

2 SHEETS-SHEET JamlwZ Howard Carling ATTORNEY TIIB COLUMBIA PLANnaruum S. H. CARLING.

WARP BEAM HOLDING MECHANISM FOR LOOMS.

PPLICATION FILED JUNE 17. I918.

' INVENTOR Jam uel Howard flaring/y BY wrm Patented Oct. 14, 1919.

2 SHEETS-SHEET 2 ii'nrrnn srargs rarest orrron.

SAMUEL HOWARD CARLING, OF EASTON, PENNSYLVANIA, ASSIGNOR TO CARBIN MACHINE CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

WARP-BEAM-I-IOLDING MECHANISM FOR LOOMS.

Application filed June 17, 1918.

To all whom it may con-corn:

Be it known that I, SAMUEL HOWARD CARLING, a citizen of the United States, and a resident of Easton, in the county of Northampton and State of Pennsylvania, have invented, certain new and useful Improvements in WVarp-Beam-Holding Mechanism for Looms, of which the following is a specification. I

My invention relates to attachments which may be readily applied to numerous styles of looms now in use, for the purpose of holding the warp-beam stationary to permit loom operators to remove the filling when defects in the weaving are present.

It is well known in this art that frequently foreign matter dropping on the warp threads or imperfections in either the warp or filling cause frequent flaws or imperfections in the woven fabric. When an operator sees these imperfections she is supposed to stop the loom and remove the filling from the warp up to the perfect fabric. As usually constructed, a tension is maintained on the warp threads and fabric to insure the proper formation of sheds, by means of heavy weights carried by ropes which are coiled around the ends of the warp beam.

Heretofore, when it was desired to rip out the filling, it was necessary for the operator to walk around to the rear of the 100m and release the weights so that they rested on the floor, to release the tension on the warp,-then go to the front of the loom to remove the imperfect filling, and after that was accomplished to again return to the back of the loom to lift the heavy weights into position to again exert a tension on the warp, and then return to the front of the loom to continue the weaving. Even skilled weavers have to rip out the filling because of flaws in the weaving, many times in the course of a days run. It is obvious that the above described method, which is the one generally in use for releasing the tension On the warp, is a slow, laborious and inefficient one and results in keeping down the output of the loom.

One of the objects of my invention there fore is to simplify the operation of releasing the tension on the warp to overcome the disadvantages of the method above set forth. Another object is to relieve the weaver of the necessity of continually low ering and raising the weights on the warp Specification of Letters Patent.

Patented Oct. 14, 1919.

Serial No. 240,409.

beam to enable her to rip out filling. Another object is to provide a holding mechanism for loom warp beams that can be operated by the weaver from the position she normally occupies when weaving. A further object is to provide a warp beam holding mechanism that can be readily attached to typical or standard forms of looms now in use. Other objects Will be apparent from the following specification when read in connection with the accompanying drawings in which:'

Figure 1 is a side elevation of a loom equipped with my improved holding device.

Fig. 2 is an enlarged detail of the operating lever, viewed from the right in Fig. 1.

Fig. 3 is a diagrammatic sectional View illustrating the threading of the loom and the method heretofore used for releasing the tension on the warp threads.

Fig. 1 is a detail plan View of the warp beam showing my holding device in place thereon.

Fig. 5 is an elevation of the holding device with the front flange of the holding drum sectioned ofi'.

Fig. 6 is a horizontal section illustrating a detail of construction.

Referring to the drawings I have illus trated in Fig. 1 a typical form of silk weaving loom 1 equipped with the suitable mechanism as shown for raising and lowering the harness 2 in the usual manner to form sheds through which the shuttle 3 carried by the lay 1 is thrown by the pick 5 to carry the filling threads through the sheds. The lay is operated in the usual manner by a crank 6 formed in the shaft7, the pitman 8 connecting the crank with the lay 1.

The warp beam 9 is secured to a shaft 10 which is supported in V-shaped brackets 11-l1 secured to the loom frame 12. Secured near each end of the shaft 10 and ad jacent to the brackets 1111 are the flanged pulleys 13l3 around each of which is coiled a rope 14. To one end of the rope a heavy weight 15 is secured andto the other end a light weight 16 is likewise fastened.

The weights 15 weigh usually from fifty to seventy five pounds each and act in the direction of the full line arrow in Fig. 3 to keep a tension onthe warp to insure the formation of proper sheds, in a manner well known to thoseskilled in this art.

In the normal operation of weaving the the weaving operation.

warp beam rocks back and forth each time paying off a small length of the warp which is wound'thereon, the small weight 16 striking the floor when the warp beam is rocked in the direction of the dotted arrow as the lay beats the filling up into the fabric. The feed roller 17 and the cloth roll .18 are operated in the direction of the arrows in Fig. 3 by the usual ratchet mechanism, not shown herein, as it forms no part of the present invention.

When flaws inthe fabric are discovered it is necessary to rip out the filling and this necessitates stopping the loom and releasing the action of the weight upon'the warp to relieve the tension thereon. After the tension'i-s released the feed mechanism for turning the rolls 17 and 18 is disengaged A and the lay 4 is moved toward the harness 2 "to permit the weaver to readily rip out the'filling. .Heretofo're in'or der to relieve the tension on the Warp it wasne'cessary for the weaver to go to the back of the loom and drop the weight 1 5 tothe floor, as shown in dotted lines in Fig. '3. Shethen returned tot'he front' of the'loom, to remove the fillin'g'and after that was again'ob-liged to go to the back'of the loom to raisethe heavyweights 15 to the position shown in full lines. The continual raising of the weights put a considerable tax onthe energy of weavers, who are usually girls, and resulted as well in a great loss of time. 7

The holdingmeans to be now disclosed does awaywith the necessityof the weaver raising the weights 15 or even leaving the front of the loom to release the tension on the warp.

To the end of theshaft 10 I secure by means of a set screw or other suitable means a flangedholding drum 19. A flexible clamp '20 passes around the drum 19 and is normally loosely associated therewith during At one end the clamp 20 has an eye 21 formed thereon which is'adapted tobe readily slipped on and off of apin 22 carried by a bracket 23 secured to the loom frame 12. -The other end of the clamp'2O is provided with a swiveled turnbuckle 24 which adjustably connects the link 25 with the operating lever 26. This lever is fulcrumed on a stud 27 (Fig, 2) 'havinga shoulder 28 which with 3 the coaction of the nut 29 detachably secures the supporting bracket 30 to the loom frame 12. The lever 26 is provided with lugs 31 and 32 to limit its travel by coming into contact with the bracket 30.

With a'lo'om equipped with my improved holding device when it is desiredto release the tension on the warp to enable the operator to ripout filling it is only necessary for the weaver to first stop the loom and then..graspthe lever 26 and pull it toward her over the dead center until the lug 32 I 45. In a loom, a warp drum detachably secured thereto, a 'flexible member for clamping said .drum ina'fixed misses stops its movement. This action will securely lock the clamp 20 to the ;drum;;19 thus relieving the warp beam of the torque exerted by the weights 15. The weaver then disengages the ratchet feeding mechanism for the rollers 17 and 18 and moves the lay 1 toward the harness. This will cause the sheds to close and give sufficient slack in the warp to enable the weaver to remove the imperfect filling. In some 'instances the weaver may turn the feed rolls 17 and 18 in the opposite direction to the arrowsto give more slack for the ripping out operation. It is clear that at this time there is no tension on the "warp as the clamp 20 holds the warp beam stationary thereby preventing the wei 'hts 15 from exerting a torque thereon.

It will be seenthat by utilization of the improved holding device it is unnecessary for the operator to either lower or lift the heavy weights or to leave the front of the loom in order to either release or restore the tension on the warp prior to ripping out imperfect filling. great deal of unnecessary labor for this weaver and also saves a greatdeal oftime, thereby increasing the output of woven fabric in a given time very materially. V While I have described more or less'pref ciselyv the details of construction which I employ I do not wish to be understood as limiting myself thereto as it is clear that changes of construction may be made by those skilled in the art without departing from the spirit and scope of'm-y invention. 'VVhat I claim'is: '1. In aloom, a warp beam, meanstending to normally exert a torque on said warp beam when the loom is runningand means for applying a braking pressure to said warp beam to hold it in "a fixed position when the loom is stopped.

2. In a loom, a warp beam, a holding drum secured thereto, a flexible member for holding said drum in a fixedposition when the loom isstopped, and means connected to said flexible member whereby it can be operated to clampsaid flexible member "to said drum. 1

3. In a 100111, a warp beam, a holding drum'secured thereto, a flexible member for holding said drum in a fixed" position when the loom is stopped, and means operable from the front of the loom for" clamping said flexible member to the holding drum.

positionwhen the loom is stopp'ed, one end of said flexible member being detachably secured to the loom frame, and means'connectedwith the other'end of said flexible member for clamping it'on "the aforesaid drum. P I H 5. In a loom, a warp beam, means carried This results in saving a its its

beam, a holding tie by said warp beam for normally exerting a tension on the warp, a holding drum secured to said warp beam, a flexible member co-acting with said drum to hold the warp beam in a fixed position when the loom is stopped, and means for clamping said flexible member to the holding drum. 7

6. In a loom, a warp beam, means carried by said warp beam for normally exerting a tension on the warp, a holding drum secured to said warp beam, a flexible member coacting with said drum to hold the warp beam in a fixed position when the loom is stopped and means for clamping said flexible member to the holding drum.

7 In a loom, a warp beam, means carried by said warp beam for exerting a tension on the Warp, a holding drum secured to said warp beam, a flexible member co-acting with said drum to hold the warp beam in a fixed position when the loom is stopped and means operable from the front of the loom for clamping said flexible member to the holding drum, the said last mentioned means being carried by a bracket which is detachably secured to the loom frame.

8. In a loom, a warp beam, means carried thereby for exerting a tension on the warp, a holding drum secured to said warp beam,

so a flexible clamp associated with said holding drum, a pin secured to the loom frame, the said clamp having an eye on one end arranged to be freely slipped on and off of said pin, a link connected to the opposite end of said clamp and an operating lever connected to said link for moving the clamp.

9. In a loom, a warp beam, means carried thereby for exerting a tension on the warp, a holding drum secured to said warp beam, a flexible clamp associated with said holding drum, a pin secured to the loom frame, the said clamp having an eye on one end arranged to be freely slipped on and 0E of said pin, a link connected to the opposite end of said clamp and an operating lever operable from the front of the loom connected to said link for moving the clamp.

10. In a loom, a warp beam, a holding drum secured thereto, means associated with the warp beam for exerting a tension on the warp and means associated with said drum for holding said warp beam in a fixed position to relieve the tension on the warp when the loom is stopped to permit the weaver to remove imperfections in the woven fabric.

In witness whereof I have hereunto signed my name.

SAMUEL HOWARD OARLING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. O. 

